气候变化领域集成服务门户(CCPortal): Temperature Dependence of the Collision-Induced Absorption Band of O2 Near 1.27 µm

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DOI	10.1029/2021JD034860
	Temperature Dependence of the Collision-Induced Absorption Band of O2 Near 1.27 µm
	Kassi S.; Guessoum S.; Abanto J.C.A.; Tran H.; Campargue A.; Mondelain D.
发表日期	2021
ISSN	2169-897X
卷号	126 期号:13
英文摘要	The 1.27 μm O2 band is increasingly called upon for air-mass determination from ground-based and space-borne atmospheric spectra because of its spectral proximity to CO2, and CH4 bands at 1.6 μm, in contrast to the more distant A-band at 0.76 μm. For this purpose, it is important to well characterize not only the narrow absorption lines but also the strong underlying broad collision-induced absorption (CIA) structure and its temperature dependence. Spectra of pure O2, and of O2 in N2, were recorded by cavity ring down spectroscopy (CRDS) at 271 K and 332 K, with the help of a newly developed temperature regulated cell. The quality of the spectra allowed determining the small variations (at the few percent level) of the (Formula presented.), (Formula presented.), and (Formula presented.) binary coefficients with temperature. Together with the binary coefficients at 297 K reported previously, they allow characterizing the temperature dependence of the O2 CIA at 1.27 µm in atmospheric conditions. The obtained results are compared with previous measurements by Fourier transform spectroscopy (FTS) and recent theoretical calculations. In the wings of the O2-O2 CIA, an increase with temperature is observed in agreement with calculations but contrary to these calculations, a decrease is observed near the maximum of the CIA band. The temperature dependence is found in good agreement with the theoretical (Formula presented.) values and the experimental (Formula presented.) values derived from the FTS measurements. Binary coefficients integrated over the entire band show almost no variation with temperature for O2-N2 and a small increase for pure O2, in agreement with the theoretical predictions. © 2021. American Geophysical Union. All Rights Reserved.
英文关键词	Air; Cavity ring down spectroscopy; collision induced absorption; oxygen; temperature dependence
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/237151
作者单位	Université Grenoble Alpes, CNRS, Laboratoire Interdisciplinaire de Physique, Grenoble, France; Laboratoire de Météorologie Dynamique, IPSL, CNRS, Sorbonne Université, École normale supérieure, PSL Research University, École polytechnique, Paris, France
推荐引用方式 GB/T 7714	Kassi S.,Guessoum S.,Abanto J.C.A.,et al. Temperature Dependence of the Collision-Induced Absorption Band of O2 Near 1.27 µm[J],2021,126(13).
APA	Kassi S.,Guessoum S.,Abanto J.C.A.,Tran H.,Campargue A.,&Mondelain D..(2021).Temperature Dependence of the Collision-Induced Absorption Band of O2 Near 1.27 µm.Journal of Geophysical Research: Atmospheres,126(13).
MLA	Kassi S.,et al."Temperature Dependence of the Collision-Induced Absorption Band of O2 Near 1.27 µm".Journal of Geophysical Research: Atmospheres 126.13(2021).